lohmann



(No Model") 2 SheetsSheet 1.

O. P. G. LOHMANN. ROTARY MOTOR.

,563. Patented June 28,1898.

, minesses fivenfor 2 SheetsSheet 2.

(No Model.)

0. P. G. LOHMANN.

ROTARY MOTOR.

Patented June 28, 1898.

li negses U TED STATES PATENT Inner.

CONRAD FRIEDRICH CHRISTIAN LOHMANN, or NORTHGOTE, VICTORIA.

- ROTARY,

MOTOR.

SPECIFICATION forming part of Letters Patent No. 606,563, dated June 28,1898.

Application filed July 29, 1897.

To aZZ whom, it Inay concern.- I

Be it known that 1, CoNRAn FRIEDRICH CHRISTIAN LOHMANN, engineer, asubject of the Emperor of Germany, residing at N o. 13

Andrewstreet, Northcote, near Melbourne, in, the British Colony ofVictoria, have invented an Improved Rotary Motor to be Driven by "Steamor other Motive Fluid, of which the following is a specification. p I, I

The main object of this invention is to pro-- vide a rotary motor whichcan beworked by steam, compressed gas, or' other motive fluid, whichwill develop a maximum amount of power with a minimum of cost, and whichwill utilize certain novel principles of action' and reaction, ashereinafter described.

tion.

In order to facilitatea clear understanding of the invention, I willdescribe it by referaround its periphery. This disk may be cupshaped, asshown in Fig. 1, or its upper surface might be inclined, so as to form aconicaldisk, although the shape shown is preferable. This diskA ismounted upon a spindle a, which rests upon a vertically-adjustable conea in thecenter of a second horizontal rotating disk 0, and said disk Aisalso provided with an upwardly-extending spindle or shaft a which issteadied in gun-metal. or other bearings a carried by a casting D,forming the main frame or supportof the motor.

The upper disk A can be adjusted relatively to the lower one C'by meansof a conicalended set-screw E passing into the central boss 0 of thelower disk 0 and arranged so that its conical end ebears against theunder side of and thus supports the conical stud a, carrying the spindlea of'the disk A. By turning this set-screw E in the required directionit will be obvious that said disk A can Serial No. 646,364. (No model.)

be raised or lowered with great exactitude,

and thus the adjustment betweenthe two disks can be readily made.

The lower disk 0, like theupper one, has .a number of radial inclinedblades F, which are, however, set at an opposite angle to the blades B,as shown in Fig. 4, and which, moreover, are made larger-that is, theyoccupy a space. equal to two or more of the blades B.- :They are alsoeach provided with a small hole or recess f, as shown.

The disk 0 is mounted upon a vertical spindle G, which passes through agun-metal or other bearing g, carried by the casting D, and which restsupon a point-bearing 9', whereby it can be adj ustedto suitrequirements.

An annular channel or chamber his formed on the under side and aroundthe center of the disk 0, and this chamber is provided with astuffing-box h, whereby a fluid-tight joint isprovided around anencircling sleeve 71 projecting up from the bearing g. From this chamberh one or more. pipes II is or are led to one of the radial blades F, andis formed with an upwardly and rearwardly inclined discharge or deliveryport 71 as shownin Fig. 4;, so that the current of steam orcompressedgaswill be delivered therefrom between the radial blades B ofthe upper disk A.

The supply of steam or other motive fluid to the chamber h'may bethrough the inlet- A chimney I is fitted around the upper portion of themotor by'bei-ng bolted down firmly to the frame or casting D and extendsupwardly for a sufficient height to cause a draft fluidis suppliedthrough the pipes H and II to the inclined discharge-ports h wherebysuch fluid will be directed between the blades B of the disk A, thuscausing same to rotate at a high speed. The effect of the heat and thefluid-current generated will be to rotate the disk 0 in the oppositedirection, thus using a certain amount of power that would be otherwisewasted.

The rotary motion of the disks A and O can be utilized in many differentwaysas, for instance, by means of belts leading off pulleys on thespindles G and a it being merely necessary in the event of movement inone direction only being required to use a crossed belt on one of thepulleys, as will be readily understood.

The action of the motor will be greatly assisted by the draft in thechimney I, and under some circumstances it might be practicable byincreasing the size of the disks A and 0 together with that of saidchimney to utilize this draft for driving the motor.

Another application of the invention for electrical purposes might be touse the one disk as a rotating field and the other as anoppositcly-rot-ating armature, the current being led off from betweenthe two disks.

Having now particularly described and as eertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a rotary motor the combination with the frame of arotatable disk journaled therein having inclined radial blades aroundits periphery, a complemental rotatable disk independently journaled insaid frame having radial blades around its periphery inclined oppositelyto the blades on said first-named disk and having recesseddelivery-ports therein, an annular chamber provided on the outer face ofsaid complemental disk having an inlet for the motive fluid, pipesconnecting said chamber with the delivery-ports of said radial blades,and a chimney encircling the disks and extending upward therefrom andclosed at its lower end to communication with the outer air exceptthrough the spaces between the two sets of blades, substantially asdescribed.

2. In a rotary motor, the combination with the frame of two shaftsindependently mounted therein in line with each other, means forvertically adjusting said shafts, a rotatable disk carried by each shafthaving radial in.- clined blades around its periphery, one of said disksbeing located beneath the other in operative relation thereto and havingits blades oppositely inclined from the blades of the upper disk andprovided with recessed delivery-ports, an annular chamber provided onthe outer face of the lower disk having an inlet for the motive fluid,pipes connecting said chamber with the delivery-ports of said radialblades, and a chimney encircling the upper disk and extending upwardtherefrom and closed at its lower end to communication with the outerair except through the spaces between the two sets of blades,substantially as described.

'itnesses:

EDWARD Warm-1s, ED\\'ARD \Varnns, Jr.

